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If the least count of scale is 0.1cm then is it possible that we can measure lenght up to two decimal places with that scale?
1.The angle of refraction of a light ray is 1.4 times larger than the angle of incidence.What is the refractive index of the medium when i =20°
A boy of weight 500 N sits on a see-saw 1 m away from the pivot point. A girl of weight 400 N sits on the opposite side so that she balances the see-saw. How far does she need to sit from the pivot point?
A particle with a charge of -1.24x10^-8 C is moving with instantaneous velocity (1.49x10^4m/s) î +(-3.85x10^4m/s) ĵ. What is the force exerted on this particle by a magnetic field.
(a) (1.40T)î+ (-2.30T)k̂
(b) (-1.25T)î+ (2.00T)ĵ + (-3.50T)k̂
If a 500 ml glass beaker is filled to the brim with ethyl alcohol at 5 o C, how much will overflow when the temperature reaches 72 o F.
Deduce how an increase in dust content will affect the deceleration of the system
Some subatomic particles are classifed as hadrons.There are 2 classes of hadrons.
Discuss the nature of hadrons
your answer should inclue the identifiying properties of hadrons , the structure of a hadron in each class and a discussion of the stability of free hadrons
A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x 5 sin(πt+π/3). What is the phase of motion in rad at t=2s?
During a fireworks display, a shell is shot into the air with an initial speed of 70.0 m/s at an angle of 75.0° above the horizontal, as illustrated below. The fuse is timed to ignite the shell just as it reaches its highest point above the ground. Calculate the height at which the shell explodes.
(a) Laila went to the Big Bang concert and luckily, she has a chance to meet the singer backstage. She brought a present box with a mass of 3.5 kg and passed the present on their make-up desk with a force of 38 N. She found that the desk position is slightly inclining upward about 110 to the horizontal. She also noticed that the desk was not smooth and possibly the desk has a coefficient of kinetic friction,μk around 0.11. (i)Draw free body diagram and find the normal forces on the present. (iii)Calculate the acceleration of the present as Laila pushes the present on the desk.
